Y-IM-Single Package AC and Single Package Gas/Electric Units ...

127083-YIM-B-0606
pipe dope must be used when assembling wrought iron or
steel pipe for LP. Shellac base compounds such as Gaskolac
or Stalastic, and compounds such as Rectorseal #5, Clyde’s,
or John Crane may be used.
Check all connections for leaks when piping is completed
using a soap solution. NEVER USE A FLAME.
FIRE OR EXPLOSION HAZARD
Failure to follow the safety warning exactly could
result in serious injury, death or property damage.
Never test for gas leaks with an open flame. use a
commercially available soap solution made specifically
for the detection of leaks to check all connections.
A fire or explosion may result causing property
damage, personal injury or loss of life.
VENT AND COMBUSTION AIR
Venting slots in the heating compartment access panel
remove the need for a combustion air hood. The gas heat
flue exhaust is routed through factory installed exhaust piping
with screen. If necessary, a flue exhaust extension may be
installed at the point of installation.
OPTIONS/ACCESSORIES
ELECTRIC HEAT
Electric heaters are available as factory-installed options or
field-installed accessories. Refer to electric heat instructions
for installation. These heaters mount in the heat compartment
with the heating elements extending into the supply air chamber.
All electric heaters are fused and intended for use with
single point power supply.
MOTORIZED OUTDOOR DAMPER
The Motorized Outdoor Damper can be a factory installed
option or a field installed accessory. If factory installed, refer
to the instructions included with the outdoor air hood to complete
the assembly. Field installed Motorized Outdoor
Damper accessories include complete instructions for installation.
ECONOMIZER
The Economizer can be a factory installed option or a field
installed accessory. If factory installed, refer to the instructions
included with the outdoor air hood to complete the
assembly. Field installed Economizer accessories include
complete instructions for installation.
There are two Economizer options:
1. Down Flow application with barometric relief hood standard.
2. Horizontal Flow application that requires the purchase of
a barometric relief hood.
POWER EXHAUST
The Power Exhaust can be a factory installed option or a field
installed accessory. If factory installed, refer to the instructions
included with the outdoor air hood to complete the
assembly. Field installed Power Exhaust accessories include
complete instructions for installation.
The Power Exhaust factory installed option is for Down Flow
application only.
There are two field installed Power Exhaust accessories:
1. Down Flow application.
2. Horizontal Flow application that requires the purchase of
a barometric relief hood.
RAIN HOOD
All of the hood components, including the filters, the gasketing
and the hardware for assembling, are packaged and
located between the condenser coil section and the main unit
cabinet, if the unit has factory installed options. If field
installed accessories are being installed all parts necessary
for the installation comes in the accessory.
ECONOMIZER AND POWER EXHAUST SET POINT
ADJUSTMENTS AND INFORMATION
Remove the top rear access panel from the unit. Locate the
economizer control module, where the following adjustments
will be made.
Extreme care must be exercised in turning all set
point, maximum and minimum damper positioning
adjustment screws to prevent twisting them off.
MINIMUM POSITION ADJUSTMENT
• Check that the damper blades move smoothly without
binding; carefully turn the Minimum Position Adjust
screw (found on the damper control module) fully clockwise
and then set the thermostat indoor fan switch to the
ON position and then OFF or energize and de-energize
terminals “R” to “G”.
Unitary Products Group 27